Timeline for Why deshaken video looks "wobbly" and how to fix it
Current License: CC BY-SA 3.0
8 events
| when toggle format | what | by | license | comment | |
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| Jan 28, 2015 at 0:43 | comment | added | stib | There is a perspective shift. If you look at the water tank you'll see that it is more skewed than the poles in the background, because it moves more in the frame during the exposure. Applying a skew to the whole image would over-correct the background. To correct it completely you'd have to skew the foreground and background separately. This would require adding in the missing background. Motion analysis could tell you which parts of the frame are moving and correct them according to their speed, and content-sensitive fill could plug the gaps. So it's possible, but difficult. | |
| Jan 6, 2015 at 16:16 | history | edited | Jason Conrad | CC BY-SA 3.0 |
added 1059 characters in body
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| Jan 6, 2015 at 14:56 | comment | added | Vi. |
I expect this perspective thing should not be too tricky to add to simplish stabilizer. Maybe I'll request the author of vid.stab to implement it (or even try myself). I'll revisit the question later...
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| Jan 6, 2015 at 14:40 | comment | added | AJ Henderson♦ | @Vi - In fairness, I did kind of stealth add the parallax/perspective bit to mine in response to your comments. Perspective shifting/parallax is what you are talking about from the images you added (which are super helpful by the way.) | |
| Jan 6, 2015 at 8:38 | comment | added | Vi. | Rolling shutter? Does it mean the distorsion in vertical movements and horisontal movements will be different? | |
| Jan 6, 2015 at 8:37 | comment | added | Vi. |
Maybe it's that parallax/perspective. The last time I was reading the answers it was not mentioned (or I was reading too carelessly).
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| Jan 6, 2015 at 8:35 | comment | added | Vi. | I usually accept answers when I try things suggested and it's work. It can happen after a long time (i.e. the next time I need to deshake video). And the answers look edited recently, I still have to re-read them. | |
| Jan 6, 2015 at 8:23 | history | answered | Jason Conrad | CC BY-SA 3.0 |